358
FZUS54 KHGX 310547
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1247 AM CDT Sun Aug 31 2025

Upper Texas coastal waters from High Island to the Matagorda Ship
Channel out 60 nautical miles including Galveston and Matagorda
Bays.

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.

GMZ300-311830-
1247 AM CDT Sun Aug 31 2025

.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.

A stalled frontal boundary will continue to bring scattered
showers and thunderstorms to the region through the holiday
weekend. Some of the stronger storms will be capable of producing
locally heavy rainfall. Winds outside of storms will generally be
light and variable. However, locally stronger winds in the
vicinity of thunderstorms should be expected. Additionally, the
environment will continue to be supportive of isolated
waterspouts, and we may see more on top of those observed during
the day on Saturday. While rain chances should dwindle inland,
daily isolated to scattered showers and storms may persist over
the Gulf.

$$

GMZ335-311830-
Galveston Bay-
1247 AM CDT Sun Aug 31 2025

.REST OF TONIGHT...East winds 5 to 10 knots. Bay waters smooth. A
slight chance of showers and thunderstorms.
.SUNDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Bay waters smooth.
.WEDNESDAY...Northwest winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Bay waters
smooth.
.THURSDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-311830-
Matagorda Bay-
1247 AM CDT Sun Aug 31 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A slight chance of showers and thunderstorms late.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Bay waters smooth.
Showers likely with a chance of thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Bay waters smooth.
.THURSDAY...Northwest winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-311830-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1247 AM CDT Sun Aug 31 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 3 seconds. A chance of
showers and thunderstorms.
.SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 2 seconds and south 1 foot at 4 seconds. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...Northeast winds around 10 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 3 seconds and south 1 foot at
4 seconds. A chance of showers and thunderstorms after midnight.
.MONDAY...Northeast winds around 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds. Showers likely with a
chance of thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.MONDAY NIGHT...East winds around 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.TUESDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds. A chance of showers
and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas around 2 feet in the evening, then 1 foot or less.
.WEDNESDAY...Northwest winds 10 to 15 knots, becoming north
around 10 knots in the afternoon. Seas around 2 feet in the
morning, then 1 foot or less.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming west after
midnight. Seas 1 foot or less.
.THURSDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-311830-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
1247 AM CDT Sun Aug 31 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 2 seconds and south 1 foot at
4 seconds. A slight chance of showers and thunderstorms late.
.SUNDAY...South winds around 5 knots, becoming northeast in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds and south 1 foot at 4 seconds. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds and south 1 foot at
4 seconds. A chance of showers and thunderstorms after midnight.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds. Showers likely with a
chance of thunderstorms.
.MONDAY NIGHT...East winds around 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A chance of thunderstorms.
A chance of showers in the evening, then showers likely after
midnight.
.TUESDAY...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 1 foot or less.
.THURSDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$